After doing a lot of diving in the lakes, i have noticed that the bottom of the lake is pretty much covered with algea and what not, if you touch the bottom or a log it creates a big ca-motion and visibility goes to zero, so i think a bass sees that more than actual color, just a big disturbance in the water that gets them curious. And as far as rattles, i know a crawdad or a shad doesnt rattle but we like to take rocks and tap our aluminum tanks and the bass just come flying in to see what its all about, Walleye do it too but they get a look at you and they are gone so we usually have to shoot fast when spear fishing. Obviously its illegal to shoot bass, it would be to easy and deplete the population very quick. Diving has really taught me a lot about bass fishing, Bass are so curious they really will check out about anything that is different, getting them to eat it is a different story though... We Dive BS a lot more than Table Rock, because we like to spearfish and you cant do it in MO. If you ever get a chance though it is really interesting to dive and see how bass react in there own environment, im a fair weather Diver and only do it when its warm and we rarely go over 30 feet, you dont see a whole lot deeper than that in the summer.....Just my two cents. Once they get a good look at a jig i do think size is probably the biggest factor